Hidayat, Adrian, Willem JFA Tumbuan, and Djurwati Soepeno. “Analysis of the Effect of Product, Price, Place and Promotion on Customer Satisfaction at BNI Taplus KCP Manado”. European Journal of Life Safety and Stability (2660-9630) 7 (October 20, 2021): 29-37. Accessed October 5, 2025. http://www.ejlss.indexedresearch.org/index.php/ejlss/article/view/68.